Dendrobium plant named ‘Suden1201’

ABSTRACT

A new and distinct  Dendrobium  cultivar named ‘Suden1201’ is disclosed, characterized by unique splash type flower coloration. The new variety is a  Dendrobium,  typically produced as an indoor ornamental plant.

Latin name of the genus and species: Dendrobium hybrid.

Variety denomination: ‘Suden1201’.

BACKGROUND OF THE INVENTION

The new cultivar is the product of chance discovery. The new varietyoriginated as a naturally occurring whole plant mutation of theunpatented proprietary variety referred to as ‘FZ2OK×91 No. 1’ varietyof Dendrobium hybrid.

The new variety was discovered by the inventor, Thumrong Suphachadiwong,a citizen of Thailand, during August of 2008 in a commercial greenhousebelonging to the inventor in Chonburi, Thailand. After identifying thenew variety as a potentially interesting selection, the inventorcontinued confidential testing and propagation of ‘Suden1201’, assessingstability of the unique characteristics of this variety.

Asexual reproduction of the new cultivar ‘Suden1201’ was first performedat a commercial laboratory belonging to the inventor in Chonburi,Thailand by tissue culture in March of 2009. Access to all plants wasrestricted, as plants were kept in a greenhouse not open to the public,and tissue culture plantlets were in a laboratory belonging to theinventor, and not accessible to the public. Through subsequentpropagation by vegetative cuttings, multiple generations have beenreproduced, which have shown that the unique features of this cultivarare stable and reproduced true to type.

SUMMARY OF THE INVENTION

The cultivar ‘Suden1201’ has not been observed under all possibleenvironmental conditions. The phenotype may vary somewhat withvariations in environment such as temperature, day length, and lightintensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘Suden1201.’ These characteristics incombination distinguish ‘Suden1201’ as a new and distinct Dendrobiumcultivar:

-   -   1. Unique splash type flower coloration.

PARENT COMPARISON

Plants of the new cultivar ‘Suden1201’ are similar to the parent,Dendrobium ‘FZ2OK×91 No. 1’ in most horticultural characteristics. Thenew variety, however, produces flowers with splash type coloration,whereas ‘FZ2OK×91 No. 1’ produces flowers that are of solid coloration.

COMMERCIAL COMPARISON

‘Suden1201’ is similar to the unpatented commercial variety Dendrobium‘Burana Splash’ in most horticultural characteristics. The new variety,however, produces darker purple colored flowers with lateral lobes ofthe flower touching, whereas ‘Burana Splash’ produces a lighter purplecolored flower with open lateral lobes. The apical lobe of ‘Sudan1201’is narrower and smaller than that of ‘Burana Splash’. ‘Sudan1201’produces a flower heart of a significantly different color than theflower heart of ‘Burana Splash’.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph in FIG. 1 illustrates in full color atypical plant of ‘Suden1201’ grown in a commercial greenhouse inChonburi, Thailand. This plant is approximately 1 year old, shownplanted in a 10.5 cm. container. The photograph was taken usingconventional techniques and although colors may appear different fromactual colors due to light reflectance it is as accurate as possible byconventional photographic techniques.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The RoyalHorticultural Society Colour Chart 2001, except where general terms ofordinary dictionary significance are used. The following observationsand measurements describe ‘Suden1201’ plants grown in a greenhouse inChonburi, Thailand. Temperatures ranged from 26° C. to 30° C. day. From26° C. to 30° C. night. No artificial light, photoperiodic or chemicaltreatments were given to the plants. Measurements and numerical valuesrepresent averages of typical plant types.

-   Botanical classification: Dendrobium hybrid ‘Suden1201’.

PROPAGATION

-   Type of propagation typically used: Tissue culture.-   Time to produce a rooted cutting/liner: Tissue culture production    takes 18 months. After deflasking it takes another 9 to 12 months to    get a well-rooted plant under average temperatures ranging between    26° C. and 30° C.-   Root description:    -   -   Root color.—Near RHS Yellow-White 158A.        -   Average diameter.—Average: 2 mm.        -   Average length.—Average: 11 cm.

PLANT

-   Growth habit: Sympodial, upright.-   Height from top of soil line to top of foliage: 28.0 cm.-   Height from top of soil line to top of flowers: 48.0 cm.-   Plant spread: 30.8 cm.-   Normal pot size: 10.5 cm circular pot.-   Growth rate: Moderate.-   Number of leaves per plant: Average: 12.-   Plant stem:    -   -   Length.—Approximately 17.6 cm.        -   Diameter.—Approximately 1.8 cm.        -   Aspect.—Approximately 90° angle to soil surface.        -   Strength.—Strong.        -   Texture.—Smooth, dull, axially ribbed.        -   Color.—Near RHS Yellow-Green 144A and 144B.

FOLIAGE

-   Leaf:    -   -   Arrangement.—Distichous.        -   Average length.—Approximately 12.1 cm.        -   Average width.—Approximately 4.1 cm.        -   Shape of blade.—Ovate.        -   Aspect.—Leaves in an average angle of 30° to main stem            (0°=vertical), curved, tip pointed downward in an average            angle of −20° (0°=horizontal).        -   Apex.—Acute.        -   Base.—Decurrent. Sheath length: Average 0.4 cm. Sheath            width: Average 0.3 cm. Sheath color: Near RHS Green 143A and            143B.        -   Margin.—Entire.        -   Texture of top surface.—Smooth, moderately glossy.        -   Texture of bottom surface.—Smooth, dull.        -   Durability to physical stress.—High.        -   Color.—Young foliage upper side: Near RHS Yellow-Green 146A.            Young foliage under side: Near RHS Yellow-Green 146B. Mature            foliage upper side: Near RHS Green N137B. Mature foliage            under side: Near RHS Yellow-Green 147B.        -   Venation.—Type: Parallel. Venation coloration: Upper            Surface: Near RHS Green N137B. Lower Surface: Near RHS            Yellow-Green 144A.-   Petiole: No petioles present.

FLOWERING CHARACTERISTICS

-   General description:    -   -   Flower bud.—Rate of opening: Approximately 30 days from            first sight. Length: Approximately 2.8 cm. Diameter:            Approximately 1.1 cm. Shape: Oblong, curved. Color: Upper            side near Purple N77B, lower side near RHS Yellow-Green 145C            tip near Yellow-Green 146B.        -   Peduncle.—Length: Approximately 39.0 cm. Diameter:            Approximately 0.2 cm. Aspect: Approximately 0° angle to            rosette. Strength: Strong. Texture: Smooth, very slightly            glossy. Color: Near RHS Yellow-Green 144B, tinged in between            RHS 152A and N200A on the uppermost side, with most light            exposure.

INFLORESCENCE

-   Flowers per stem: Average: 10.-   Inflorescence arrangement: Simple raceme.-   Inflorescence height: Approximately 30.0 cm (from lowest pedicel to    top of inflorescence).-   Inflorescence width: Approximately 11.5 cm.

INDIVIDUAL FLOWERS

-   -   -   Flower type.—Single, orchidaceous (zygomorphic), typical for            Dendrobium.        -   Rate of opening.—After the first flower has opened, it takes            approximately four weeks before the top flower opens.        -   Shape.—Orchidaceous (zygomorphic), typical for Dendrobium,            with three sepals, two lateral petals and a labellum (third            petal).        -   Height.—Approximately 5.0 cm, excluding sheath.        -   Diameter.—Approximately 5.8 cm.        -   Depth.—Approximately 3.1 cm.        -   Fragrance.—No fragrance.        -   Persistent?.—Non-persistent.        -   Quantity of petals.—Average: 3 (two lateral petals and a            labellum (third petal)). Only the two lateral petals are            described here as such.

-   Petals:    -   -   Arrangement.—Oppositely placed on each side of the column.        -   Length.—Approximately 3.8 cm.        -   Width.—Approximately 3.2 cm.        -   Shape.—Reniform to orbicular.        -   Apex.—Rounded.        -   Base.—Broad cuneate.        -   Margin.—Entire.        -   Appearance.—Dull, moderately velvety.        -   Texture.—Upper forward surface: smooth, moderately velvety.        -   Texture.—Lower back surface: smooth, slightly velvety.        -   Color.—When opening, forward surface: Near RHS Purple-Violet            N80A, margin near the top irregularly variegated RHS Purple            76A and White N155D. When opening, back surface: In between            RHS Purple-Violet N80A and N81B, margin near the top            irregularly variegated RHS Purple 76A and White N155D. Fully            Opened, forward surface: In between near RHS Purple N78A and            Violet-Purple N80A, but slightly more reddish (not on            R.H.S.-Colour Chart). Margin near the top irregularly            variegated RHS Purple 76A and White N155D. Fully Opened,            back surface: Near RHS Purple-Violet N80A, margin near the            top irregularly variegated RHS 76A and N155D. Fading,            forward surface: Not fading (colors same as “Fully Opened”).            Fading, back surface: Near RHS Purple-Violet N81B, margin            near the top irregularly variegated RHS 76A and N155C.        -   Color venation fully opened, forward surface.—Near RHS            Red-Purple N71A.        -   Color venation fully opened, back surface.—Near RHS            Violet-Purple N80A.

-   Labellum:    -   -   Shape.—Deltoid, strongly involute.        -   Length.—Approximately 3.1 cm.        -   Width.—Approximately 1.6 cm (when “unfolded open”            approximately 3.7 cm).        -   Texture.—Smooth, moderately velvety.        -   Appearance.—Dull, moderately velvety.        -   Tip.—Abruptly acute.        -   Base.—Broad cuneate.        -   Color.—When opening, forward surface: Near RHS Purple N79C,            margins and top irregularly variegated RHS Purple 76A and            White N155D, base near RHS Yellow-Green 150D. When opening,            back surface: Near RHS Purple N78A, margins and top            irregularly variegated RHS Purple 76A and N155D, base near            RHS Green-White 157A. Fully Opened, forward surface: Near            RHS Purple N79C, margins and top irregularly variegated RHS            Purple 76A and White N155D, base near RHS Yellow-Green 150D.            Fully Opened, back surface: Near RHS Purple N78A, margins            and top irregularly variegated RHS Purple 76A and White            N155D, base near RHS Green-White 157A. Fading, forward            surface: Near RHS Purple N78A to Purple N80A, margins and            top irregularly variegated RHS 76D and NN155C, base near            145C to RHS 150D. Fading, back surface: Near RHS Purple            N78A, margins and top irregularly variegated RHS Purple 76A            and White N155C, base near RHS 150D.        -   Color venation fully opened, forward surface.—No venation            visible.        -   Color venation fully opened, back surface.—No venation            visible.        -   Margin.—Entire.        -   Callosites.—Dimensions: Average: 0.2 cm long and 0.1 cm            wide. Location: At the base of the labellum, colored near            RHS Yellow-Green 150D.

-   Sepals:    -   -   Quantity.—Average: 3.        -   Appearance.—Dull, moderately velvety.        -   Length.—Approximately 3.3 cm.        -   Width.—Approximately 1.7 cm.        -   Shape.—Ovate.        -   Apex.—Acute.        -   Base.—Broad cuneate.        -   Margin.—Entire.        -   Texture.—Smooth, moderately velvety.        -   Color.—Forward surface: Between RHS Purple N78A to N78B,            Striped, margined and top irregularly variegated RHS Purple            76B and White N155D, base near RHS Green-White 157A. Back            surface: Near RHS Purple 77B, margins variegated RHS White            N155D, base near RHS Greyed-White 156C.

-   Pedicels:    -   -   Length.—Approximately 2.9 cm.        -   Diameter.—Approximately 0.2 cm.        -   Angle.—About 45° to 90° angle to peduncle.        -   Strength.—Moderately strong.        -   Texture.—Smooth, slightly glossy.        -   Color.—Upper side near RHS Greyed-Red 182B, under side near            RHS Yellow-Green 146D.

REPRODUCTIVE ORGANS

-   Stamens, style and stigma fused into column?: Yes.-   Column length: Average: 1.4 cm.-   Column diameter: Average: 0.7 mm.-   Column color: Near RHS Green-White 157A.-   Ovary:    -   -   Position.—Superior, placed directly above stigma.        -   Diameter.—Average: 0.6 cm.        -   Color.—Near RHS Green-White 157B.-   Stigma:    -   -   Shape.—Concave, circular.        -   Color.—Near RHS Yellow-Green 147D.        -   Dimensions.—Average: 0.3 cm wide and high.-   Pollinia:    -   -   Color.—Near RHS Yellow 13A.        -   Dimensions.—Average: 0.2 cm long and 0.1 cm wide.        -   Quantity.—2.

OTHER CHARACTERISTICS

-   Disease resistance: High.-   Drought tolerance and cold tolerance: Normal.-   Fruit/seed production: No fruits/seeds detected to date.-   Any other characteristics: No.

What is claimed is:
 1. A new and distinct cultivar of Dendrobium plantnamed ‘Suden1201’ as herein illustrated and described.